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8 Cards in this Set
- Front
- Back
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How does the periodic table arrange it's elements in terms of proton numbers? |
The periodic table is arranged in increasing proton number- starting at hydrogen with a proton number of 1 and working along the rows. |
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Describe lithium, sodium and potassium in Group 1.
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A collection of relatively softmetals showing a trend in melting point andreaction with water.
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What are the trends in the properties of chlorine, bromine and iodine? |
-Chlorine is a gas so it's boiling and melting points are lower, Bromine is a liquid but iodine is a solid so its melting and boiling points are higher. -Fluorine is very pale yellow, chlorine is yellow-green, and bromine is red-brown. -chlorine is more reactive than iodine |
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What are they properties of group 1? |
The alkali metals are soft, reactive metals. They react vigorously with water and become more reactive as you go down the group.
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What are the properties of group 7? |
The halogens are reactive non-metals. They become darker as you go down the group. Their reactivity decreases as you go down the group and their boiling points increase. A more reactive halogen will displace a less reactive halogen from solutions of its salts.
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What are the properties of the halogens (group 0)? |
The noble gases are unreactive non-metals, which exist as single atoms.
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What are the transition metals? |
Acollection of metals having high densities,high melting points and forming colouredcompounds, and which, as elements andcompounds, often act as catalysts.
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What are some uses of the noble gases? |
-Light bulbs- Argon surrounds the coiled filament as even when white hot, it won't react. -Helium has a low density(1/7th of air) so is used to make airships and blimps float. |
